Re: help with GDI+ - C# Discussion Boards

21-Oct-05 20:38

Did you look at the System.IO.Path.GetDirectoryName[^] method?

Regards
Senthil
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help with GDI+

tawammar21-Oct-05 17:07

tawammar

21-Oct-05 17:07

i drew a line from p1 to p2 , now i wanna deal with this line as an object. i can select the line, delete it or move it with the mouse, how can i do this?

S. Senthil Kumar21-Oct-05 20:39

21-Oct-05 20:39

I'm afraid there is no built in support for this. You have to create your own Line objects, associate them with the graphical coordinates and detect movements or deletions by the user.

Regards
Senthil
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tawammar21-Oct-05 21:33

tawammar

21-Oct-05 21:33

i know that, i did it if i had a line from p1 to p2, its easy, using the line equation Y=aX+b u can do anything, but what im tring to do is more Complicated, im trying to make lines ( arrows ) for my UML project, and its hard to make the lines like the other UML Modelling tools, im not getting the idea of how they made the line to be like an object

S. Senthil Kumar21-Oct-05 21:46

21-Oct-05 21:46

The mathematical equation can only draw a line for you, in your case, you need to do the reverse i.e detect a user click and check if the clicked point is on the line.

Regards
Senthil
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Sasuko22-Oct-05 0:26

Sasuko

22-Oct-05 0:26

try to make a vector line

Beginner Question: Data type issue

[Marc]23-Oct-05 12:22

[Marc]

23-Oct-05 12:22

Just use VG.net[^]!
A little bit of advertising for ya, Frank Poke tongue | ;-P

Pompiedompiedom... Wink | ;)

"..Commit yourself to quality from day one..it's better to do nothing at all than to do something badly.."
-- Mark McCormick

ivelander21-Oct-05 15:45

ivelander

21-Oct-05 15:45

I am almost done with a project to calculate employee salaries, but am having problems adding a 5% bonus on everyone's final salary. The salary variable is in integer format and I need to convert it to a double. is there a quick and easy way to fix this issue? I am getting the data type error in the Everbody's bonus section. Below is the code ( this is my first program ever, so it is most likely very sloppy, sorry in advance!):

using System;

namespace EmployeeSalary
{
/// <summary>
/// Calculates employee salary based on experience, birthday, position, and company success
/// </summary>

class EmployeeSalary
{

[STAThread]
static void Main(string[] args)
{
int executive, //employee's executive status
finalSalary = 0, //employee's final salary
baseSalary = 5000, //employee's base salary
experience, //employee's years of experience
birthday; //employee's birthday bonus

// Employee's executive status (1 = exec, 2 = not exec)
Console.Write( "Please enter executive code (1/yes 2/no): " );
executive = Int32.Parse( Console.ReadLine() );
if ( executive == 1 )
{
Console.WriteLine( "\nSorry, you're an executive, no benefits for you!" );
goto finalWrite;
}

//Employee's years of experience (1 = less than 3 yrs, 2 = 3 to 5 yrs, 3 = over 5 yrs)
Console.WriteLine( "\nPlease enter your experience code (1/less than 3 yrs, 2/3-5 yrs, 3/over 5 yrs)" );
experience = Int32.Parse( Console.ReadLine() );
if ( experience == 1 ) finalSalary = baseSalary - 2000;
else if ( experience == 2 )
{
finalSalary = baseSalary + 2500;
goto bonusAdd;
}
else if ( experience == 3 )
{
finalSalary = baseSalary + baseSalary;
goto bonusAdd;
}
else
{
Console.WriteLine("That is not a valid entry");
goto bonusAdd;
}

//Employee birthday question
Console.WriteLine( "\nIs this month your birthday (1/yes 2/no)?" );
birthday = Int32.Parse(Console.ReadLine() );
if ( birthday == 1)
{
finalSalary = finalSalary + 250;
goto bonusAdd;
}
if ( birthday == 2) goto bonusAdd;

//Everybody's bonus
bonusAdd:
finalSalary = finalSalary + (finalSalary * 0.5);

//Write final salary
finalWrite:
Console.Write("Your salary for this month is: ");
Console.WriteLine(finalSalary.ToString("c"));

}
}
}

MoustafaS21-Oct-05 16:13

MoustafaS

21-Oct-05 16:13

ivelander wrote:
if ( executive == 1 )
{
Console.WriteLine( "\nSorry, you're an executive, no benefits for you!" );
goto finalWrite;
}

You wrote this in order to pass any non-1 chars, this is wrong, because any one may enter 0 for example or any string, you must check the input.

While you have done this in the second input :

ivelander wrote:
else
{
Console.WriteLine("That is not a valid entry");
goto bonusAdd;
}

You may do this :

ivelander wrote:
finalSalary = finalSalary + 250;

Like this:

finalSalary+=250;

And at last :

ivelander wrote:
finalSalary = finalSalary + (finalSalary * 0.5);

double lastResult = Convert.ToDouble(finalSalary);
lastResult += lastResult*0.5;

Hope this helps.

"Praying." Is this only what I can do for him ?

Matt Gerrans21-Oct-05 16:19

Matt Gerrans

21-Oct-05 16:19

> I am almost done with a project to calculate employee salaries, but am having problems adding a 5% bonus on everyone's final salary.

Hmm, I've worked at companies that had this very same problem.

Here is an easy way to add 5% to an integer value:

int AddFivePercent( int value )
{
    return (105 * value) / 100;
}

Of course, you might want to make a more general case function like AddXPercent(), but I'll leave that as an exercise.

And there is also the option of converting to float, as you mentioned.

Matt Gerrans

Matt Gerrans21-Oct-05 16:22

Matt Gerrans

21-Oct-05 16:22

By the way, if you are just starting out, you should know that using goto is a very bad habit -- not one you want to develop.

Matt Gerrans

ivelander21-Oct-05 16:28

ivelander

21-Oct-05 16:28

I only used it 6 times in less that 100 lines of code... not bad. Haha. Thanks for all the advice, the good news is that things can only get better from here. I'm sure I will be back for more help.

Moving a graphic on a form

Matt Gerrans22-Oct-05 7:19

Matt Gerrans

22-Oct-05 7:19

If you are interested to see how it would be done without any gotos post back. Even better, try doing it yourself without any gotos and if you have in trouble in the process, post your questions here again. After you have it in the goto-free state, you can decide for yourself whether the code seems better.

(Actually, with a small example like this, it will not be clearly better, but I've seen very large pieces of production code that use gotos and that becomes hideously incomprehensible and hard to maintain).

Matt Gerrans

Please help...

KORCARI21-Oct-05 12:39

KORCARI

21-Oct-05 12:39

Need to build a two dimensional math graph.Anybody can give me any ideas about how to do it?

har04mich21-Oct-05 11:41

har04mich

21-Oct-05 11:41

I have this graphic, that I want to move up and down the form by the user clicking on one button to go up and one button to go down, it sounds like a game, but it really isn't. I have no idea on how to make or even start on this project, can it be done with C#.Net? and do I use DirectX? or the Drawing Class? Confused | :confused:

Ali Beirami21-Oct-05 12:08

Ali Beirami

21-Oct-05 12:08

<code
private void="" btnmove_click(object="" sender,="" system.eventargs="" e)
="" {
="" this.location="new" point(this.location.x="" ,="" this.location.y="" -50);
="" which="" moves="" current="" form="" 50="" pix="" up="" and="" so="" on="" ..=""
="" }
="">
I hope this works.

S. Senthil Kumar21-Oct-05 20:42

21-Oct-05 20:42

How are you planning to display the graphic? Through a standard PictureBox control? Or are you going to draw it yourself?

Either case, you need to track the current position of the graphic using a variable and update the position in the button click.

Regards
Senthil
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Anonymous22-Oct-05 1:04

Anonymous

22-Oct-05 1:04

It is actually am Image, so I guess a picture box control.

S. Senthil Kumar22-Oct-05 1:15